diff --git a/src/main/kotlin/dev/usbharu/hideout/domain/model/Posts.kt b/src/main/kotlin/dev/usbharu/hideout/domain/model/Posts.kt
new file mode 100644
index 00000000..69d202a9
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/domain/model/Posts.kt
@@ -0,0 +1,51 @@
+package dev.usbharu.hideout.domain.model
+
+import org.jetbrains.exposed.sql.ResultRow
+import org.jetbrains.exposed.sql.Table
+
+object Posts : Table() {
+    val id = long("id")
+    val userId = long("userId").references(Users.id)
+    val overview = varchar("overview", 100).nullable()
+    val text = varchar("text", 3000)
+    val createdAt = long("createdAt")
+    val visibility = integer("visibility").default(0)
+    val url = varchar("url", 500)
+    val repostId = long("repostId").references(id).nullable()
+    val replyId = long("replyId").references(id).nullable()
+}
+
+data class Post(
+    val userId: Long,
+    val overview: String? = null,
+    val text: String,
+    val createdAt: Long,
+    val visibility: Int,
+    val url: String,
+    val repostId: Long? = null,
+    val replyId: Long? = null
+)
+
+data class PostEntity(
+    val id: Long,
+    val overview: String? = null,
+    val text: String,
+    val createdAt: Long,
+    val visibility: Int,
+    val url: String,
+    val repostId: Long? = null,
+    val replyId: Long? = null
+)
+
+fun ResultRow.toPost():PostEntity{
+    return PostEntity(
+        id = this[Posts.id],
+        overview = this[Posts.overview],
+        text = this[Posts.text],
+        createdAt = this[Posts.createdAt],
+        visibility = this[Posts.visibility],
+        url = this[Posts.url],
+        repostId = this[Posts.repostId],
+        replyId = this[Posts.replyId]
+    )
+}
diff --git a/src/main/kotlin/dev/usbharu/hideout/repository/IPostRepository.kt b/src/main/kotlin/dev/usbharu/hideout/repository/IPostRepository.kt
new file mode 100644
index 00000000..d7f523db
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/repository/IPostRepository.kt
@@ -0,0 +1,10 @@
+package dev.usbharu.hideout.repository
+
+import dev.usbharu.hideout.domain.model.Post
+import dev.usbharu.hideout.domain.model.PostEntity
+
+interface IPostRepository {
+    suspend fun insert(post:Post):PostEntity
+    suspend fun findOneById(id:Long):PostEntity
+    suspend fun delete(id:Long)
+}
diff --git a/src/main/kotlin/dev/usbharu/hideout/repository/PostRepositoryImpl.kt b/src/main/kotlin/dev/usbharu/hideout/repository/PostRepositoryImpl.kt
new file mode 100644
index 00000000..7ec43b22
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/repository/PostRepositoryImpl.kt
@@ -0,0 +1,64 @@
+package dev.usbharu.hideout.repository
+
+import dev.usbharu.hideout.domain.model.Post
+import dev.usbharu.hideout.domain.model.PostEntity
+import dev.usbharu.hideout.domain.model.Posts
+import dev.usbharu.hideout.domain.model.toPost
+import dev.usbharu.hideout.service.IdGenerateService
+import kotlinx.coroutines.Dispatchers
+import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.transactions.experimental.newSuspendedTransaction
+import org.jetbrains.exposed.sql.transactions.transaction
+
+class PostRepositoryImpl(database: Database, private val idGenerateService: IdGenerateService) : IPostRepository {
+
+    init {
+        transaction(database) {
+            SchemaUtils.create(Posts)
+        }
+    }
+
+    suspend fun <T> query(block: suspend () -> T): T =
+        newSuspendedTransaction(Dispatchers.IO) { block() }
+
+    override suspend fun insert(post: Post): PostEntity {
+        return query {
+
+            val generateId = idGenerateService.generateId()
+            Posts.insert {
+                it[id] = generateId
+                it[userId] = post.userId
+                it[overview] = post.overview
+                it[text] = post.text
+                it[createdAt] = post.createdAt
+                it[visibility] = post.visibility
+                it[url] = post.url
+                it[repostId] = post.repostId
+                it[replyId] = post.replyId
+            }
+            return@query PostEntity(
+                generateId,
+                post.overview,
+                post.text,
+                post.createdAt,
+                post.visibility,
+                post.url,
+                post.repostId,
+                post.replyId
+            )
+        }
+    }
+
+    override suspend fun findOneById(id: Long): PostEntity {
+        return query {
+            Posts.select { Posts.id eq id }.single().toPost()
+        }
+    }
+
+    override suspend fun delete(id: Long) {
+        return query {
+            Posts.deleteWhere { Posts.id eq id }
+        }
+    }
+}